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    <meta charset="UTF-8">
    <title>Title</title>
    <style>
        pre { 
            padding: .5em;
            line-height: 1.5;
            background: hsl(20, 50%, 95%);
            background-image: linear-gradient(
                            rgba(120,0,0,.1) 50%, transparent 0);
            background-size: auto 3em;
            background-origin: content-box;
            font-family: Consolas, Monaco, monospace;
        }
        code { font: inherit }
    </style>
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<body>
    <pre><code>while (true) {
        var d = new Date();
        if (d.getDate()==1 &amp;&amp;
            d.getMonth()==3) {
            alert("TROLOLOL");
        }
    }</code></pre>
</body>
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